drush 6.x-4.0-rc1

Changes since DRUPAL-6--3-3:

• #861822 by greg.1.anderson: Add an option to sanitize email addresses and passwords from user table post sql-sync.
• #782270 by Dan Chadwick and greg.1.anderson: fix cwd problems with pm commands on Windows Vista
• #885224 by greg.1.anderson: add hook_drush_help_alter
• #886166 by greg.1.anderson: drush help sub-options
• #872920 by xjm and patrick2000. pm-updatecode always does Refreshing update status information ...
• Add topic command and remove token integration since thats in devel module now.
• #895074 by schoobidoo. drush site-upgrade fails on non existant settings_destination folder
• #895166 by moshe weitzman. in site-upgrade, deal with new bootstrap of sql-sync.
• Move drush_bootstrap_max() call to drush_pm_download_init() for better compatibility with commandfiles that want to hook in.
• Add --sort option on help command so commands come back in alpha order.
• #894552 by David Rothstein. Drush rebuilds module and theme data too often when running updates.
• #893562 by David Rothstein. Caches are flushed too many times when running the updatedb command in Drupal 7
• #897896 by Crell. Make a terrible-tasting sandwich that is lacking in pickles.
• #885948 by frjo. Updates to make the Bazaar integration functional.
• #689400 by jonhattan. fix order of enable/disable of modules to respect nested dependencies.
• #689400 by jonhattan. better dependency checking on enable command. d5 and d6.
• #907024 by gapple: correct placement of flags to cvs checkout and cvs update
• #784342 by dbt: pass --no-color if terminal is not set (e.g. when redirecting output)
• Back out 1.16; concerned about passing -dP to cvs checkout
• #898768 by jonhattan: avoid disabling restricted modules
• Never write module_implements cache documentation and implementation.
• Force to use a location for backups outside the drupal root.
• #928050 by deviantintegral. sql-conf --show-passwords isn't documented
• #929284 by luchochs. Explicit callback functions with special names.
• bug report #927002 by jonhattan: warn the user if specified release for dl does not exists.
• bug report #826720 and #909008 by jonhattan: rework pm-download to add verbosity, work on a tmp directory, validate user options and clean up package-handlers logic.
• bug report #890672 by joachim: scape database name with backticks.
• #939436 by moshe weitzman. -h and --help options are different
• bug report #907024 by gapple and jonhattan: CVS package handler doesn't create new directories from repository / rewrite drush_pm_cvs()
• bug report #906840 by gapple: CVS package handler doesn't check for subversion directory correctly
• bug report #941932 by Dave Reid: Drush doesn't run drupal_flush_all_caches() for D7 after module enable/disable.
• #939820 by elliotttf | greg.1.anderson: Fixed drush_backend_batch_process() ignores user if different than 0.
• bug report #950928 by jonhattan: 'drush dl not working on Mac': implement drush_find_tmp() and revert tar -xvf to tar -xf & tar -tf in wget package-handler.
• task #954702 by jonhattan: Do not list test/hidden projects after drush dl.
• #845374 by marcvangend: Fixed POSIX path separator incompatible with Windows environment.
• #950378 by claudiu.cristea: avoid warning in php 5.3
• #929284 (b) by luchochs: update documentation for explicit callback special names patch
• #740448 by patrick2000: Do not export COLUMNS unless there is a value for it from tput
• Fix site-install with sites-subdir option. See http://groups.drupal.org/node/98019 by tobias.
• #926780 by greg.1.anderson: Use drush to write standard Unix script files in php
• bug report #921116 by jonhattan: updatecode: use a backend process to notify of pending db updates.
• #954870 by alanivey: Allow --exclude-from for core-rsync
• #925776 by Bevan: Refactor _drush_sql_get_credentials() to allow empty passwords
• bug report #809170 by jonhattan: drush removes the sites directory when updating a module named sites (refactoring of _pm_get_project_path())
• #899696 by luchochs: fix problems with 'path-aliases' when an alias has a 'parent' item
• #955562 by fangel and greg.1.anderson: SQL-Sync local dump file modification check always failing
• #963850 by greg.1.anderson: Repair broken mysqldump
• #716412 by moshe weitzman. add sql-drop command
• #898818 by greg.1.anderson: rework sql-sync sanitizations to use new sanitize hook to avoid problem with drush_bootstrap_max_to_local_sitealias, which broke first-time sync operations
• #934038 by moshe weitzman. Show the uid that was logged in during --debug logs
• #934396 by magnusk. sql-dump Should merge arrays of table names
• #962754 by jonhattan: debug messages not available until DRUSH_BOOTSTRAP_DRUSH
• #918468 by greg.1.anderson. Drush should use php.ini files in drush conf folders + some fixes for drush paths that contain spaces (e.g. on Windows)
• #957224 by greg.1.anderson: Add --no-core option to filter out core modules in pm-list
• bug report #965878 by greg.1.anderson and jonhattan: Cross-volume backup failure.
• #917650 by greg.1.anderson: Added Improve the state of drush error reporting during startup.
• #740448 by patrick2000, greg.1.anderson, kotnik, Owen Barton: Fixed tput errors when running 'drush' script in cron.
• Add hook to cache-clear so that commandfiles may add own caches to the list of candidates.
• #869098 by dereine | gr33nman: Added Drush cc - option x - clear block cache.
• #919762 by alex_b: Changed drush cc - support registry_rebuild().
• Rename new hook to drush_cache_clear from just cache_clear. Also add to drush.api.php
• #698078 by garret albright. more sqlite compatibility.
• Clear autoload cache during cache-clear if autoload module is present (D6)
• task #966002 by jonhattan: Proper usage of DIRECTORY_SEPARATOR
• feature request #843740 by gordon, luchochs, jonhattan: Add pm-releasenotes command to extract the release notes from drupal.org
• Some fixes and error checking over previous commit for issue #843740
• feature request #973102 by greg.1.anderson: Add support for comma separated list of projects in pm commands
• #973102 by jonhattan and greg.1.anderson: remove comma from module lists
• #955092 by greg.1.anderson: drush support for rsync version lower than 2.6.9
• #698078 by Garrett Albright. sqlite support in site-install.
• bug report #978204 by ahwebd: watchdog-delete command deletes all watchdog entries even if a filter argument is provided
• #823146 by tim.plunkett: Allow pm-updatecode to only perform security updates
• #836198 by jonhattan: pm-updatecode uses obsolete info from cache
• #814174 by sdboyer, Damien Tournoud. git.drupal.org integration!
• #983302 by greg.1.anderson: Use drush alias groups as namespaces
• site-install command now compatible with D6. Based on http://drupal.org/project/drush_site_install6 by cbalan.
• #981270 by luchochs: remove message on mismanagement of project releases in pm-releasenotes.
• #979262 by luchochs: pm-releasenotes does not select the correct releasenotes when version not explicitly provided and 'dev' is the installed one
• Document hook_cli_bashrc
• #985412 by moshe weitzman and greg.1.anderson: Storing sql-dump results in backup directory
• #977048 by luchochs, greg.1.anderson and jonhattan: terminology change: modules/themes/profile are now generally called extensions.
• #951026 by jonhattan: New flag --use-site-dir for pm-download to force to use the site specific extension directory
• #982462 by jonhattan: pm-enable - print unmet requirements message at the first opportunity
• #987064 by jonhattan: subdirectory for backups based on project type
• #982098 by greg.1.anderson and jonhattan: pm-update should only run updatedb if code was updated.
• #940688 by greg.1.anderson and jonhattan: make cvs package-handler work with backup version control engine in updatecode. It introduce the new function drush_copy_dir() and makes drush_move_dir() robust on windows.
• #977048: reorganization of some pm- functions and rename of a variable across updatecode.pm.inc
• #985412 by moshe weitzman. Log the location of the file after sql-dump.
• #987974 by greg.1.anderson: Content for `drush topic`